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#include "vertexdatainterpreter.h"
#include <QListWidget>
#include <QStringList>
#include <QDebug>
#include <qmath.h>
static int
sizeForType(int type)
{
switch(type) {
case DT_INT8:
case DT_UINT8:
return 1;
case DT_INT16:
case DT_UINT16:
return 2;
case DT_INT32:
case DT_UINT32:
return 4;
case DT_FLOAT:
return sizeof(float);
case DT_DOUBLE:
return sizeof(double);
default:
return sizeof(int);
}
}
template <typename T>
static QStringList
convertData(const QByteArray &dataArray,
int type,
int stride,
int numComponents,
int startingOffset)
{
QStringList strings;
int dataSize = dataArray.size() - startingOffset;
const char *data = dataArray.constData() + startingOffset;
int typeSize = sizeForType(type);
int elementSize = numComponents * typeSize;
if (!stride)
stride = elementSize;
int numElements = dataSize / stride;
if ((numElements % numComponents) != 0) {
int temp = qFloor(dataSize / (float)stride);
int fullElemSize = temp * stride;
if (fullElemSize + numComponents * typeSize <= dataSize) {
/* num full elements plus the part of the buffer in which we fit */
numElements = temp + 1;
} else {
numElements = temp;
}
}
#if 0
qDebug() << "numElements = "<<numElements;
qDebug() << "elementSize = "<<elementSize;
qDebug() << "stride = "<<stride;
qDebug() << "numComponents = "<<numComponents;
qDebug() << "typeSize = "<<typeSize;
#endif
for (int i = 0; i < numElements; ++i) {
QString vectorString = QString::fromLatin1("%1) [").arg(i);
for (int j = 0; j < numComponents; ++j) {
int offset = i*stride + j*typeSize;
const T *elementPtr =
(const T*)(data + offset);
T elem = *elementPtr;
vectorString += QString::number(elem);
if ((j + 1) < numComponents)
vectorString += QLatin1String(", ");
}
vectorString += "]";
strings += vectorString;
}
return strings;
}
VertexDataInterpreter::VertexDataInterpreter(QObject *parent)
: QObject(parent),
m_listWidget(0),
m_type(DT_FLOAT),
m_stride(16),
m_components(4),
m_startingOffset(0)
{
}
void VertexDataInterpreter::setData(const QByteArray &data)
{
m_data = data;
if (m_listWidget)
m_listWidget->clear();
}
QByteArray VertexDataInterpreter::data() const
{
return m_data;
}
void VertexDataInterpreter::setType(int type)
{
m_type = type;
}
int VertexDataInterpreter::type() const
{
return m_type;
}
void VertexDataInterpreter::setStride(int stride)
{
m_stride = stride;
}
int VertexDataInterpreter::stride() const
{
return m_stride;
}
void VertexDataInterpreter::setComponents(int num)
{
m_components = num;
}
int VertexDataInterpreter::components() const
{
return m_components;
}
void VertexDataInterpreter::setListWidget(QListWidget *listWidget)
{
m_listWidget = listWidget;
}
void VertexDataInterpreter::interpretData()
{
if (!m_listWidget)
return;
m_listWidget->clear();
if (m_data.isEmpty() || !m_components)
return;
QStringList lst;
switch(m_type) {
case DT_INT8:
lst = convertData<qint8>(m_data, m_type, m_stride, m_components,
m_startingOffset);
break;
case DT_UINT8:
lst = convertData<quint8>(m_data, m_type, m_stride, m_components,
m_startingOffset);
break;
case DT_INT16:
lst = convertData<qint16>(m_data, m_type, m_stride, m_components,
m_startingOffset);
break;
case DT_UINT16:
lst = convertData<quint16>(m_data, m_type, m_stride, m_components,
m_startingOffset);
break;
case DT_INT32:
lst = convertData<qint32>(m_data, m_type, m_stride, m_components,
m_startingOffset);
break;
case DT_UINT32:
lst = convertData<quint32>(m_data, m_type, m_stride, m_components,
m_startingOffset);
break;
case DT_FLOAT:
lst = convertData<float>(m_data, m_type, m_stride, m_components,
m_startingOffset);
break;
case DT_DOUBLE:
lst = convertData<double>(m_data, m_type, m_stride, m_components,
m_startingOffset);
break;
default:
qDebug()<<"unkown gltype = "<<m_type;
}
//qDebug()<<"list is "<<lst;
m_listWidget->addItems(lst);
}
void VertexDataInterpreter::setTypeFromString(const QString &str)
{
if (str == QLatin1String("GL_FLOAT")) {
setType(DT_FLOAT);
} else if (str == QLatin1String("GL_INT")) {
setType(DT_INT32);
} else if (str == QLatin1String("GL_UNSIGNED_INT")) {
setType(DT_UINT32);
} else if (str == QLatin1String("GL_SHORT")) {
setType(DT_INT16);
} else if (str == QLatin1String("GL_UNSIGNED_SHORT")) {
setType(DT_UINT16);
} else if (str == QLatin1String("GL_BYTE")) {
setType(DT_INT8);
} else if (str == QLatin1String("GL_UNSIGNED_BYTE")) {
setType(DT_UINT8);
} else if (str == QLatin1String("GL_DOUBLE")) {
setType(DT_DOUBLE);
} else {
qDebug()<<"unknown vertex data type";
}
}
int VertexDataInterpreter::startingOffset() const
{
return m_startingOffset;
}
void VertexDataInterpreter::setStartingOffset(int offset)
{
m_startingOffset = offset;
}
#include "vertexdatainterpreter.moc"
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